WO2020216330A1 - Handover method and terminal - Google Patents

Abstract

The present disclosure provides a handover method and a terminal, said method comprising: during the process of conditional handover, receiving a handover command sent by a source cell, and a terminal returning to a handover process indicated by the handover command; or, the terminal continuing to perform conditional handover; the handover command not carrying a conditional handover trigger condition.

Description

Switching method and terminal

Cross references to related applications

This application claims the priority of Chinese Patent Application No. 201910345899.3 filed in China on April 26, 2019, the entire content of which is incorporated herein by reference.

Technical field

The present disclosure relates to the field of communication technology, in particular to a handover method and terminal.

Background technique

In the handover process in the related art, when the terminal initiates handover to the target cell, it will no longer receive the configuration or related instruction information of the source cell.

In order to avoid that the terminal cannot receive the handover command related message of the source cell after the channel condition of the source cell deteriorates, which will cause handover failure, a conditional handover (Conditional Handover) process is introduced.

The main steps of the conditional switching process in the related technology are as follows:

Step 1. The source cell sends handover request information to one or more target cells.

Step 2: The target cell feeds back handover confirmation information to the source cell.

Step 3: The source cell sends configuration information for conditional handover to the terminal.

Step 4. The terminal evaluates whether the candidate cell meets the conditions, and selects a target cell for handover after meeting the conditions.

Step 5. The terminal initiates a random access process in the selected target cell.

Step 6. The terminal sends handover completion information to the target cell.

Step 7. The source cell sends a cancel condition handover command to other target cells.

Step 8. The other target cells send a conditional handover cancellation confirmation command to the source cell.

In the current conditional handover process, when the terminal judges that the trigger condition is satisfied, it executes the handover process and initiates access to the target cell. If in this process, the terminal receives the normal handover command sent by the source cell, there is no corresponding processing at this time Process.

Summary of the invention

The embodiments of the present disclosure provide a handover method and terminal to solve the problem that there is no corresponding processing flow when the terminal receives a normal handover command sent by a source cell during a conditional handover process in the related art.

In order to solve the above technical problems, the present disclosure is implemented as follows: a handover method, applied to a terminal, includes:

In the process of conditional handover, receiving the handover command sent by the source cell, the terminal goes back to the handover process indicated by the handover command; or, the terminal continues to perform the conditional handover;

Wherein, the switching command does not carry a trigger condition for condition switching.

The embodiment of the present disclosure also provides a terminal, including:

The handover module is configured to receive the handover command sent by the source cell during the conditional handover process, and fall back to the handover process indicated by the handover command; or continue to perform the conditional handover;

Wherein, the switching command does not carry a trigger condition for condition switching.

The embodiment of the present disclosure further provides a terminal, including a processor, a memory, and a computer program stored on the memory and capable of running on the processor. When the computer program is executed by the processor, the above The steps of the switching method described.

The embodiments of the present disclosure also provide a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the switching method described above are implemented.

In the embodiment of the present disclosure, when the terminal receives the ordinary handover command sent by the source cell during the conditional handover process, the terminal returns to the ordinary handover process or continues to perform the conditional handover, which can ensure the integrity of the signaling and improve the handover process.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

Figure 1 shows a schematic diagram of the steps of a handover method provided by an embodiment of the present disclosure;

FIG. 2 shows one of the schematic structural diagrams of a terminal provided by an embodiment of the present disclosure;

FIG. 3 shows the second structural diagram of a terminal provided by an embodiment of the present disclosure.

Detailed ways

The technical solutions in the embodiments of the present disclosure will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

In the embodiments of the present disclosure, words such as "exemplary" or "for example" are used as examples, illustrations, or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present disclosure should not be construed as being more optional or advantageous than other embodiments or design solutions. To be precise, words such as "exemplary" or "for example" are used to present related concepts in a specific manner.

The terminal provided in the embodiments of the present disclosure may be a mobile phone, a tablet computer, a notebook computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, a wearable device (Wearable Device), a vehicle-mounted device, or a personal digital assistant (Personal Digital Assistant). Digital Assistant, PDA) etc. It should be noted that the specific types of terminals are not limited in the embodiments of the present disclosure. In the embodiments of the present disclosure, LTE and NR systems are taken as examples, but are not limited to this system, and the technical solutions provided in the present disclosure can be applied to other systems with the same problems.

As shown in FIG. 1, an embodiment of the present disclosure provides a handover method applied to a terminal, including:

Step 101: During the process of conditional handover, receiving a handover command sent by the source cell, the terminal falls back to the handover process indicated by the handover command; or, the terminal continues to perform the conditional handover;

Wherein, the switching command does not carry a trigger condition for condition switching.

In the embodiments of the present disclosure, without loss of generality, the above-mentioned condition switching process includes:

The source cell sends a handover request (handvoer request) to no less than one candidate target cell;

The candidate target cell performs access control on the terminal (optional); that is, the candidate target cell reserves or configures resources for terminal handover for the terminal to perform random access on the target cell;

If access control is allowed, the candidate target cell sends a handover response to the source cell, optionally including a handover command (transparently transmitted to the terminal via the source cell);

The source cell sends a message with a handover command (such as an RRC reconfiguration message or a mobility control message MobilityControl) to the terminal, optionally including a trigger condition for the conditional handover;

If the measurement result of the terminal meets the triggering condition of the conditional handover, the access is initiated in the corresponding target cell.

It should be noted that the handover command sent by the source cell received during the conditional handover process is an ordinary handover command, that is, a handover command that does not carry the trigger condition of the conditional handover.

As an optional embodiment, in the foregoing embodiment of the present disclosure, step 101 includes:

Before the trigger condition of the conditional handover is satisfied or before the terminal initiates access to the first target cell that meets the trigger condition of the conditional handover, the handover command sent by the source cell is received, and the terminal falls back to the handover indicated by the handover command process.

In the embodiments of the present disclosure, initiating access to a certain cell includes: initiating a random access process, or an RRC connection establishment process, or an attach process to the cell.

Before the trigger condition of the conditional handover is met, the terminal receives the handover command sent by the source cell. In this case, the terminal directly falls back to the handover process indicated by the handover command;

or,

Before the terminal initiates access to the first target cell, the terminal receives the handover command sent by the source cell. In this case, the terminal directly falls back to the handover process indicated by the handover command; the first target cell is determined by the terminal to satisfy The target cell of the trigger condition for the current condition handover.

Optionally, the terminal rollback to the handover process indicated by the handover command includes:

The terminal rolls back to the switching process indicated by the switching command; or, the terminal rolls back to the switching process indicated by the switching command after a preset length of time.

Optionally, the terminal rollback to the handover process indicated by the handover command includes:

Terminating the condition switching process by the terminal;

or,

The terminal does not initiate access to the first target cell meeting the trigger condition of the conditional handover.

Optionally, the terminal terminating the conditional switching process includes:

Stop the running first timer and/or second timer;

Wherein, the first timer is a timer used to determine whether the condition switching fails; for example, the first timer is T304.

The second timer is a timer used to control condition switching configuration and de-configuration. For example, the second timer may be called T3xx and so on.

It should be noted that during the operation of the second timer, the switching command for conditional switching is valid or the configuration information for conditional switching is valid; otherwise, the switching command for conditional switching becomes invalid or the configuration for conditional switching Information is invalid.

Specifically, the second timer is used to determine whether the random access resource reserved or configured for the terminal handover by the candidate target cell is valid. For example, during the operation of the second timer, the candidate target cell reserves or configures the random access resources for the terminal handover to be valid; when the second timer expires or stops, the candidate target cell is reserved or configured for the terminal handover. The random access resource is invalid.

Further optionally, the returning of the terminal to the handover process indicated by the handover command includes:

Initiate access to the second target cell corresponding to the handover command.

Optionally, the initiating access to the second target cell corresponding to the handover command includes:

The terminal initiates access to the second target cell by using the resource configured by the handover command of the conditional handover (can be referred to as the conditional handover command);

or,

The terminal uses the resources configured by the handover command (which may be referred to as a normal handover command) received from the source cell and received during the conditional handover process to initiate access to the second target cell.

Further, the method further includes:

The terminal stops the first timer and/or the second timer that are running;

or,

Restarting the first timer and/or the second timer by the terminal;

or,

In the case that the terminal uses the resource configured by the handover command of the conditional handover to initiate access to the second target cell, the terminal continues to run the first timer and/or the second timer;

Wherein, the first timer is a timer used to determine whether the condition switching fails;

The second timer is a timer used to control condition switching configuration and de-configuration.

Wherein, during the operation of the second timer, the switching command for conditional switching is valid or the configuration information for conditional switching is valid; otherwise, the switching command for conditional switching becomes invalid or the configuration information for conditional switching becomes invalid.

Specifically, the second timer is used to determine whether the random access resource reserved or configured for the terminal handover by the candidate target cell is valid. For example, during the operation of the second timer, the candidate target cell reserves or configures the random access resources for the terminal handover to be valid; when the second timer expires or stops, the candidate target cell is reserved or configured for the terminal handover. The random access resource is invalid.

As an optional embodiment, in the foregoing embodiment of the present disclosure, step 101 includes:

After the trigger condition of the conditional handover is met, or after the terminal initiates access to the first target cell meeting the trigger condition of the conditional handover, or before the terminal successfully accesses the first target cell meeting the trigger condition of the conditional handover, the source is received The handover command sent by the cell, the terminal goes back to the handover process indicated by the handover command;

or,

After the trigger condition of the conditional handover is met, or after the terminal initiates access to the first target cell meeting the trigger condition of the conditional handover, or before the terminal successfully accesses the first target cell meeting the trigger condition of the conditional handover, the source is received For the handover command sent by the cell, the terminal continues to perform the conditional handover.

It should be noted that if the first target cell that meets the trigger condition of the conditional handover or the first target cell the terminal is accessing is different from the second target cell corresponding to the handover command, the terminal will fall back to the handover command instruction The switching process;

Or, if the first target cell that meets the triggering condition of the conditional handover or the first target cell that the terminal is accessing is the same as the second target cell corresponding to the handover command, the terminal returns to the handover process indicated by the handover command .

It should be further explained that if the first target cell that meets the trigger condition of the conditional handover or the first target cell the terminal is accessing is the same as the second target cell corresponding to the handover command, the terminal continues to perform the conditional handover.

Optionally, the terminal rollback to the handover process indicated by the handover command includes:

The terminal rolls back to the switching process indicated by the switching command; or, the terminal rolls back to the switching process indicated by the switching command after a preset length of time.

Optionally, the terminal rollback to the handover process indicated by the handover command includes:

Terminating the condition switching process by the terminal;

or,

The terminal does not initiate access to the first target cell that meets the trigger condition of the conditional handover;

or,

The terminal terminates the ongoing access initiated to the first target cell meeting the trigger condition of the conditional handover.

Wherein, the terminal terminating the conditional switching process includes:

Stop the running first timer and/or second timer;

Wherein, the first timer is a timer used to determine whether the condition switching fails; for example, the first timer is T304.

The second timer is a timer used to control condition switching configuration and de-configuration. For example, the second timer may be called T3xx and so on.

It should be noted that during the operation of the second timer, the switching command for conditional switching is valid or the configuration information for conditional switching is valid; otherwise, the switching command for conditional switching becomes invalid or the configuration for conditional switching Information is invalid.

Specifically, the second timer is used to determine whether the random access resource reserved or configured for the terminal handover by the candidate target cell is valid. For example, during the operation of the second timer, the candidate target cell reserves or configures the random access resources for the terminal handover to be valid; when the second timer expires or stops, the candidate target cell is reserved or configured for the terminal handover. The random access resource is invalid.

Further optionally, the returning of the terminal to the handover process indicated by the handover command includes:

Initiate access to the second target cell corresponding to the handover command.

Optionally, the initiating access to the second target cell corresponding to the handover command includes:

The terminal initiates access to the second target cell by using the resource configured by the handover command of the conditional handover (can be referred to as the conditional handover command);

or,

The terminal uses the resources configured by the handover command (which may be referred to as a normal handover command) received from the source cell and received during the conditional handover process to initiate access to the second target cell.

Optionally, when the terminal reverts to the handover process indicated by the handover command, the method further includes:

During the access process initiated by the terminal to the second target cell, the preamble transmission counter (PREAMBLE_TRANSMISSION_COUNTER) and/or the preamble power ramp-up counter (PREAMBLE_POWER_RAMPING_COUNTER) are counted again;

or,

In the case that the second target cell and the first target cell are the same, the preamble transmission counter (PREAMBLE_TRANSMISSION_COUNTER) and/or the preamble power ramp-up counter ( PREAMBLE_POWER_RAMPING_COUNTER) continue to count;

or,

In the case where the second target cell and the first target cell are the same and the terminal uses the resources configured by the handover command for conditional handover to initiate access to the second target cell, the terminal sends to the second target cell During the initiated access process, the preamble transmission counter (PREAMBLE_TRANSMISSION_COUNTER) and/or the preamble power climb counter (PREAMBLE_POWER_RAMPING_COUNTER) continue to count.

Optionally, when the terminal reverts to the handover process indicated by the handover command, the method further includes:

The terminal stops the first timer and/or the second timer that are running;

or,

Restarting the first timer and/or the second timer by the terminal;

or,

In the case that the terminal uses the resource configured by the handover command of the conditional handover to initiate access to the second target cell, the terminal continues to run the first timer and/or the second timer;

Wherein, the first timer is a timer used to determine whether the condition switching fails;

The second timer is a timer used to control condition switching configuration and de-configuration.

Wherein, during the operation of the second timer, the switching command for conditional switching is valid or the configuration information for conditional switching is valid; otherwise, the switching command for conditional switching becomes invalid or the configuration information for conditional switching becomes invalid.

Specifically, the second timer is used to determine whether the random access resource reserved or configured for the terminal handover by the candidate target cell is valid. For example, during the operation of the second timer, the candidate target cell reserves or configures the random access resources for the terminal handover to be valid; when the second timer expires or stops, the candidate target cell is reserved or configured for the terminal handover. The random access resource is invalid.

Optionally, that the terminal continues to perform the conditional switching includes:

The terminal ignores the handover command and continues to initiate access to the first target cell meeting the trigger condition of the conditional handover or continues the ongoing access initiated to the first target cell meeting the trigger condition of the conditional handover.

Or, that the terminal continues to perform the conditional switching includes:

According to the handover command, the terminal continues to initiate access to the first target cell meeting the trigger condition of the conditional handover or continues the ongoing access initiated to the first target cell meeting the trigger condition of the conditional handover.

Optionally, according to the handover command, the terminal continues to initiate access to the first target cell that meets the trigger condition of the conditional handover, including:

In the case that the second target cell corresponding to the handover command is the same as the first target cell meeting the trigger condition of the conditional handover, the terminal initiates access to the first target cell using the resource configured by the handover command.

Further, in the case that the terminal continues to perform the conditional switching, the method further includes:

During the access process initiated by the terminal to the first target cell, the preamble transmission counter (PREAMBLE_TRANSMISSION_COUNTER) and/or the preamble power ramp-up counter (PREAMBLE_POWER_RAMPING_COUNTER) continue to count;

or,

During the access process initiated by the terminal to the first target cell, the preamble transmission counter (PREAMBLE_TRANSMISSION_COUNTER) and/or the preamble power ramp-up counter (PREAMBLE_POWER_RAMPING_COUNTER) are counted again.

Further, in the case that the terminal continues to perform the conditional switching, the method further includes:

The terminal stops the first timer and/or the second timer that are running;

or,

Restarting the first timer and/or the second timer by the terminal;

or,

In the case that the terminal uses the resources configured by the handover command of the conditional handover to initiate access to the first target cell, the terminal continues to run the first timer and/or the second timer;

Wherein, the first timer is a timer used to determine whether the condition switching fails;

The second timer is a timer used to control condition switching configuration and de-configuration.

Wherein, during the operation of the second timer, the switching command for conditional switching is valid or the configuration information for conditional switching is valid; otherwise, the switching command for conditional switching becomes invalid or the configuration information for conditional switching becomes invalid.

Specifically, the second timer is used to determine whether the random access resource reserved or configured for the terminal handover by the candidate target cell is valid. For example, during the operation of the second timer, the candidate target cell reserves or configures the random access resources for the terminal handover to be valid; when the second timer expires or stops, the candidate target cell is reserved or configured for the terminal handover. The random access resource is invalid.

In summary, in the above-mentioned embodiments of the present disclosure, when the terminal receives the normal handover command sent by the source cell during the conditional handover process, the terminal returns to the normal handover process or continues to perform the conditional handover, which can ensure the integrity of the signaling and improve Switch process.

As shown in FIG. 2, an embodiment of the present disclosure also provides a terminal, which is characterized in that it includes:

The handover module 201 is configured to receive a handover command sent by the source cell during a conditional handover, and fall back to the handover process indicated by the handover command; or continue to perform the conditional handover;

Wherein, the switching command does not carry a trigger condition for condition switching.

Optionally, in the foregoing embodiment of the present disclosure, the switching module 201 includes:

The first handover submodule is configured to receive a handover command sent by the source cell before the trigger condition of the conditional handover is satisfied or before the terminal initiates access to the first target cell that meets the trigger condition of the conditional handover, and the terminal rolls back To the switching process indicated by the switching command.

Optionally, in the foregoing embodiment of the present disclosure, the switching module 201 includes:

The second handover submodule is used for after the triggering condition of the conditional handover is satisfied, or after the terminal initiates access to the first target cell meeting the triggering condition of the conditional handover, or after the terminal successfully accesses the first target cell that meets the triggering condition of the conditional handover Before a target cell receives a handover command sent by the source cell, the terminal returns to the handover process indicated by the handover command;

Or, after the trigger condition of the conditional handover is satisfied or after the terminal initiates access to the first target cell meeting the trigger condition of the conditional handover or before the terminal successfully accesses the first target cell meeting the trigger condition of the conditional handover After receiving the handover command sent by the source cell, the terminal continues to perform the conditional handover.

Optionally, in the foregoing embodiment of the present disclosure, the switching module 201 is further configured to:

Back to the switching process indicated by the switching command;

or,

After the preset length of time, fall back to the switching process indicated by the switching command.

Optionally, in the foregoing embodiment of the present disclosure, the switching module 201 is further configured to:

Initiate access to the second target cell corresponding to the handover command.

Optionally, in the foregoing embodiment of the present disclosure, the switching module 201 is further configured to:

Terminating the condition switching process;

or,

Not initiate access to the first target cell that meets the trigger condition of the conditional handover;

or,

Terminate the ongoing access to the first target cell that meets the triggering condition of the handover.

Optionally, in the foregoing embodiment of the present disclosure, the switching module 201 is further configured to:

Stop the running first timer and/or second timer;

Wherein, the first timer is a timer used to determine whether the condition switching fails;

The second timer is a timer used to control condition switching configuration and de-configuration.

Optionally, in the foregoing embodiment of the present disclosure, during the operation of the second timer, the switching command for conditional switching is valid or the configuration information for conditional switching is valid; otherwise, the switching command for conditional switching becomes invalid Or the configuration information of the condition switching is invalid.

Optionally, in the foregoing embodiment of the present disclosure, the switching module 201 is further configured to:

Initiate access to the second target cell using the resource configured by the handover command of the conditional handover;

or,

Use the resource configured by the handover command sent by the source cell received in the conditional handover process to initiate access to the second target cell.

Optionally, in the foregoing embodiment of the present disclosure, the terminal further includes:

A counting module, configured to re-count the preamble transmission counter and/or the preamble power climb counter during the access process initiated by the terminal to the second target cell;

Or, when the second target cell and the first target cell are the same, the preamble transmission counter and/or the preamble power climb counter during the access process initiated by the terminal to the second target cell Continue counting

Or, when the second target cell and the first target cell are the same, and the terminal uses the resource configured by the handover command for conditional switching to initiate access to the second target cell, the terminal sends During the access process initiated by the second target cell, the preamble transmission counter and/or the preamble power climb counter continue to count.

Optionally, in the foregoing embodiment of the present disclosure, the terminal further includes:

The first processing module is used to stop the running first timer and/or second timer;

Or, used to restart the first timer and/or the second timer;

Or, when the terminal initiates access to the second target cell using the resource configured by the handover command of the conditional handover, continue to run the first timer and/or the second timer;

Wherein, the first timer is a timer used to determine whether the condition switching fails;

The second timer is a timer used to control condition switching configuration and de-configuration.

Optionally, in the foregoing embodiment of the present disclosure, during the operation of the second timer, the switching command for conditional switching is valid or the configuration information for conditional switching is valid; otherwise, the switching command for conditional switching becomes invalid Or the configuration information of the condition switching is invalid.

Optionally, in the foregoing embodiment of the present disclosure, the switching module is further configured to:

Ignore the handover command, and continue to initiate access to the first target cell meeting the trigger condition of the conditional handover or continue the ongoing access initiated to the first target cell meeting the trigger condition of the conditional handover.

Optionally, in the foregoing embodiment of the present disclosure, the switching module 201 is further configured to:

According to the handover command, continue to initiate access to the first target cell meeting the trigger condition of the conditional handover or continue the ongoing access initiated to the first target cell meeting the trigger condition of the conditional handover.

Optionally, in the foregoing embodiment of the present disclosure, the switching module 201 is further configured to:

In a case where the second target cell corresponding to the handover command is the same as the first target cell meeting the trigger condition of the conditional handover, the resource configured by the handover command of the conditional handover is used to initiate access to the first target cell.

Optionally, in the foregoing embodiment of the present disclosure, the terminal further includes:

The second processing module is configured to continue to count the preamble transmission counter and/or the preamble power climb counter during the access process initiated by the terminal to the first target cell;

Or, it is used to recount the preamble transmission counter and/or the preamble power climb counter during the access process initiated by the terminal to the first target cell.

Optionally, in the foregoing embodiment of the present disclosure, the terminal further includes:

The third processing module is used to stop the running first timer and/or second timer;

Or, used to restart the first timer and/or the second timer;

Or, when the terminal initiates access to the first target cell using the resource configured by the handover command for conditional handover, continue to run the first timer and/or the second timer;

Wherein, the first timer is a timer used to determine whether the condition switching fails;

The second timer is a timer used to control condition switching configuration and de-configuration.

Optionally, in the foregoing embodiment of the present disclosure, during the operation of the second timer, the switching command for conditional switching is valid or the configuration information for conditional switching is valid; otherwise, the switching command for conditional switching becomes invalid Or the configuration information of the condition switching is invalid.

The terminal provided by the embodiment of the present disclosure can implement each process implemented by the terminal in the method embodiment of FIG. 1, and to avoid repetition, details are not described herein again.

In summary, in the above-mentioned embodiments of the present disclosure, when the terminal receives the normal handover command sent by the source cell during the conditional handover process, the terminal returns to the normal handover process or continues to perform the conditional handover, which can ensure the integrity of the signaling and improve Switch process.

It should be noted that the terminal provided in the embodiments of the present disclosure is a terminal capable of executing the above-mentioned handover method, and all the embodiments of the above-mentioned handover method are applicable to the terminal, and can achieve the same or similar beneficial effects.

3 is a schematic diagram of the hardware structure of a terminal for implementing various embodiments of the present disclosure. The terminal 300 includes but is not limited to: a radio frequency unit 301, a network module 302, an audio output unit 303, an input unit 304, a sensor 305, a display unit 306, User input unit 307, interface unit 308, memory 309, processor 310, power supply 311 and other components. Those skilled in the art can understand that the terminal structure shown in FIG. 3 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than those shown in the figure, or combine certain components, or arrange different components. In the embodiments of the present disclosure, terminals include, but are not limited to, mobile phones, tablet computers, notebook computers, palmtop computers, vehicle-mounted terminals, wearable devices, and pedometers.

Wherein, the radio frequency unit 301 is configured to receive the handover command sent by the source cell during the conditional handover process;

The processor 310 is configured to fall back to the switching process indicated by the switching command; or continue to execute the conditional switching; wherein the switching command does not carry the triggering condition of the conditional switching.

In summary, in the above-mentioned embodiments of the present disclosure, when the terminal receives the normal handover command sent by the source cell during the conditional handover process, the terminal returns to the normal handover process or continues to perform the conditional handover, which can ensure the integrity of the signaling and improve Switch process.

It should be noted that the terminal provided in the embodiments of the present disclosure is a terminal capable of executing the above-mentioned handover method, and all the embodiments of the above-mentioned handover method are applicable to the terminal, and can achieve the same or similar beneficial effects.

It should be understood that, in the embodiment of the present disclosure, the radio frequency unit 301 can be used for receiving and sending signals in the process of sending and receiving information or talking. Specifically, the downlink data from the base station is received and processed by the processor 310; in addition, Uplink data is sent to the base station. Generally, the radio frequency unit 301 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 301 can also communicate with the network and other devices through a wireless communication system.

The terminal provides users with wireless broadband Internet access through the network module 302, such as helping users to send and receive emails, browse web pages, and access streaming media.

The audio output unit 303 may convert the audio data received by the radio frequency unit 301 or the network module 302 or stored in the memory 309 into audio signals and output them as sounds. Moreover, the audio output unit 303 may also provide audio output related to a specific function performed by the terminal 300 (for example, call signal reception sound, message reception sound, etc.). The audio output unit 303 includes a speaker, a buzzer, a receiver, and the like.

The input unit 304 is used to receive audio or video signals. The input unit 304 may include a graphics processing unit (GPU) 3041 and a microphone 3042. The graphics processor 3041 is configured to monitor images of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. Data is processed. The processed image frame may be displayed on the display unit 306. The image frame processed by the graphics processor 3041 may be stored in the memory 309 (or other storage medium) or sent via the radio frequency unit 301 or the network module 302. The microphone 3042 can receive sound, and can process such sound into audio data. The processed audio data can be converted into a format that can be sent to the mobile communication base station via the radio frequency unit 301 for output in the case of a telephone call mode.

The terminal 300 also includes at least one sensor 305, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 3061 according to the brightness of the ambient light. The proximity sensor can close the display panel 3061 and/or when the terminal 300 is moved to the ear. Or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when stationary, and can be used to identify terminal posture (such as horizontal and vertical screen switching, related games, Magnetometer posture calibration), vibration recognition related functions (such as pedometer, percussion), etc.; sensor 305 can also include fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, infrared Sensors, etc., will not be repeated here.

The display unit 306 is used to display information input by the user or information provided to the user. The display unit 306 may include a display panel 3061, and the display panel 3061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.

The user input unit 307 can be used to receive inputted number or character information, and generate key signal input related to user settings and function control of the terminal. Specifically, the user input unit 307 includes a touch panel 3071 and other input devices 3072. The touch panel 3071, also called a touch screen, can collect the user's touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 3071 or near the touch panel 3071. operating). The touch panel 3071 may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 310, the command sent by the processor 310 is received and executed. In addition, the touch panel 3071 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 3071, the user input unit 307 may also include other input devices 3072. Specifically, other input devices 3072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.

Further, the touch panel 3071 can be overlaid on the display panel 3061. When the touch panel 3071 detects a touch operation on or near it, it is transmitted to the processor 310 to determine the type of the touch event. The type of event provides corresponding visual output on the display panel 3061. Although in FIG. 3, the touch panel 3071 and the display panel 3061 are used as two independent components to realize the input and output functions of the terminal, in some embodiments, the touch panel 3071 and the display panel 3061 can be integrated. Realize the input and output functions of the terminal, which are not limited here.

The interface unit 308 is an interface for connecting an external device with the terminal 300. For example, the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) port, video I/O port, headphone port, etc. The interface unit 308 may be used to receive input (for example, data information, power, etc.) from an external device and transmit the received input to one or more elements in the terminal 300 or may be used to communicate between the terminal 300 and the external device. Transfer data between.

The memory 309 can be used to store software programs and various data. The memory 309 may mainly include a storage program area and a storage data area. The storage program area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data (such as audio data, phone book, etc.) created by the use of mobile phones. In addition, the memory 309 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

The processor 310 is the control center of the terminal. It uses various interfaces and lines to connect the various parts of the entire terminal. It executes by running or executing software programs and/or modules stored in the memory 309, and calling data stored in the memory 309. Various functions of the terminal and processing data, so as to monitor the terminal as a whole. The processor 310 may include one or more processing units; optionally, the processor 310 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface, and application programs, etc. The adjustment processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 310.

The terminal 300 may also include a power source 311 (such as a battery) for supplying power to various components. Optionally, the power source 311 may be logically connected to the processor 310 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. And other functions.

In addition, the terminal 300 includes some functional modules not shown, which will not be repeated here.

Optionally, an embodiment of the present disclosure further provides a terminal, including a processor, a memory, and a computer program stored on the memory and running on the processor, and the computer program is executed by the processor to implement the switching method described above. Each process of the example can achieve the same technical effect. To avoid repetition, I won’t repeat it here.

The embodiments of the present disclosure also provide a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the above switching method embodiment is realized, and the same technical effect can be achieved To avoid repetition, I won’t repeat it here. Wherein, the computer-readable storage medium, such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article or device that includes the element.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better.的实施方式。 Based on this understanding, the technical solution of the present disclosure essentially or the part that contributes to the related technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk). ) Includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the method described in each embodiment of the present disclosure.

The embodiments of the present disclosure are described above with reference to the accompanying drawings, but the present disclosure is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present disclosure, many forms can be made without departing from the purpose of the present disclosure and the scope of protection of the claims, all of which fall within the protection of the present disclosure.

The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present disclosure. It should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims (38)

1. A handover method, applied to a terminal, includes:

   In the process of conditional handover, receiving the handover command sent by the source cell, the terminal goes back to the handover process indicated by the handover command; or, the terminal continues to perform the conditional handover;

   Wherein, the switching command does not carry a trigger condition for condition switching.
2. The method according to claim 1, wherein the receiving a handover command sent by the source cell during the conditional handover, and the terminal returning to the handover process indicated by the handover command, comprises:

   Before the trigger condition of the conditional handover is satisfied or before the terminal initiates access to the first target cell that meets the trigger condition of the conditional handover, the handover command sent by the source cell is received, and the terminal falls back to the handover indicated by the handover command process.
3. The method according to claim 1, wherein, in the process of the conditional handover, the handover command sent by the source cell is received, and the terminal goes back to the handover process indicated by the handover command; or, the terminal Continue to perform the conditional switching, including:

   After the trigger condition of the conditional handover is met, or after the terminal initiates access to the first target cell meeting the trigger condition of the conditional handover, or before the terminal successfully accesses the first target cell meeting the trigger condition of the conditional handover, the source is received The handover command sent by the cell, the terminal goes back to the handover process indicated by the handover command;

   or,

   After the trigger condition of the conditional handover is met, or after the terminal initiates access to the first target cell meeting the trigger condition of the conditional handover, or before the terminal successfully accesses the first target cell meeting the trigger condition of the conditional handover, the source is received For the handover command sent by the cell, the terminal continues to perform the conditional handover.
4. The method according to any one of claims 1-3, wherein the terminal rollback to the handover process indicated by the handover command comprises:

   The terminal goes back to the switching process indicated by the switching command;

   or,

   The terminal returns to the handover process indicated by the handover command after a preset length of time.
5. The method according to any one of claims 1-3, wherein the terminal rollback to the handover process indicated by the handover command comprises:

   Initiate access to the second target cell corresponding to the handover command.
6. The method according to any one of claims 1-3, wherein the terminal rollback to the handover process indicated by the handover command comprises:

   Terminating the condition switching process by the terminal;

   or,

   The terminal does not initiate access to the first target cell that meets the trigger condition of the conditional handover;

   or,

   The terminal terminates the ongoing access initiated to the first target cell meeting the trigger condition of the conditional handover.
7. The method according to claim 6, wherein the terminal terminating the conditional switching process comprises:

   Stop the running first timer and/or second timer;

   Wherein, the first timer is a timer used to determine whether the condition switching fails;

   The second timer is a timer used to control condition switching configuration and de-configuration.
8. The method according to claim 7, wherein, during the operation of the second timer, the switching command for conditional switching is valid or the configuration information for conditional switching is valid; otherwise, the switching command for conditional switching becomes invalid or The configuration information for conditional switching is invalid.
9. The method according to claim 5, wherein the initiating access to the second target cell corresponding to the handover command comprises:

   The terminal initiates access to the second target cell by using the resource configured by the handover command of the conditional handover;

   or,

   The terminal uses the resources configured by the handover command sent by the source cell and received during the conditional handover process to initiate access to the second target cell.
10. The method according to claim 5, further comprising:

    During the access process initiated by the terminal to the second target cell, the preamble transmission counter and/or the preamble power climb counter are counted again;

    or,

    In the case that the second target cell and the first target cell meeting the trigger condition of the conditional handover are the same, the preamble transmission counter and/or the preamble power climbs during the access process initiated by the terminal to the second target cell The counter continues to count;

    or,

    In the case that the second target cell and the first target cell meeting the triggering condition of the conditional handover are the same, and the terminal uses the resources configured by the handover command of the conditional handover to initiate access to the second target cell, the terminal During the access process initiated to the second target cell, the preamble transmission counter and/or the preamble power climb counter continue to count.
11. The method according to claim 5, further comprising:

    The terminal stops the first timer and/or the second timer that are running;

    or,

    Restarting the first timer and/or the second timer by the terminal;

    or,

    In the case that the terminal uses the resource configured by the handover command of the conditional handover to initiate access to the second target cell, the terminal continues to run the first timer and/or the second timer;

    Wherein, the first timer is a timer used to determine whether the condition switching fails;

    The second timer is a timer used to control condition switching configuration and de-configuration.
12. The method according to claim 11, wherein, during the operation of the second timer, the switching command for conditional switching is valid or the configuration information for conditional switching is valid; otherwise, the switching command for conditional switching becomes invalid or The configuration information for conditional switching is invalid.
13. The method according to claim 1 or 3, wherein the terminal continues to perform the conditional handover, comprising:

    The terminal ignores the handover command and continues to initiate access to the first target cell meeting the trigger condition of the conditional handover or continues the ongoing access initiated to the first target cell meeting the trigger condition of the conditional handover.
14. The method according to claim 1 or 3, wherein the terminal continues to perform the conditional switching, comprising:

    According to the handover command, the terminal continues to initiate access to the first target cell meeting the trigger condition of the conditional handover or continues the ongoing access initiated to the first target cell meeting the trigger condition of the conditional handover.
15. The method according to claim 14, wherein, according to the handover command, the terminal continues to initiate access to the first target cell meeting the trigger condition of the conditional handover, comprising:

    In the case that the second target cell corresponding to the handover command is the same as the first target cell meeting the trigger condition of the conditional handover, the terminal initiates access to the first target cell using the resource configured by the handover command.
16. The method according to claim 1 or 3, wherein when the terminal continues to perform the conditional switching, the method further comprises:

    During the access process initiated by the terminal to the first target cell, the preamble transmission counter and/or the preamble power climb counter continue to count;

    or,

    During the access process initiated by the terminal to the first target cell, the preamble transmission counter and/or the preamble power climb counter are counted again.
17. The method according to claim 1 or 3, wherein when the terminal continues to perform the conditional switching, the method further comprises:

    The terminal stops the first timer and/or the second timer that are running;

    or,

    Restarting the first timer and/or the second timer by the terminal;

    or,

    In the case that the terminal uses the resources configured by the handover command of the conditional handover to initiate access to the first target cell, the terminal continues to run the first timer and/or the second timer;

    Wherein, the first timer is a timer used to determine whether the condition switching fails;

    The second timer is a timer used to control condition switching configuration and de-configuration.
18. The method according to claim 17, wherein, during the operation of the second timer, the switching command for conditional switching is valid or the configuration information for conditional switching is valid; otherwise, the switching command for conditional switching becomes invalid or The configuration information of the condition switching is invalid.
19. A terminal, including:

    The handover module is configured to receive the handover command sent by the source cell during the conditional handover process, and fall back to the handover process indicated by the handover command; or continue to perform the conditional handover;

    Wherein, the switching command does not carry a trigger condition for condition switching.
20. The terminal according to claim 19, wherein the switching module comprises:

    The first handover submodule is configured to receive a handover command sent by the source cell before the trigger condition of the conditional handover is satisfied or before the terminal initiates access to the first target cell that meets the trigger condition of the conditional handover, and the terminal rolls back To the switching process indicated by the switching command.
21. The terminal according to claim 19, wherein the switching module comprises:

    The second handover submodule is used for after the triggering condition of the conditional handover is satisfied, or after the terminal initiates access to the first target cell meeting the triggering condition of the conditional handover, or after the terminal successfully accesses the first target cell that meets the triggering condition of the conditional handover Before a target cell receives a handover command sent by the source cell, the terminal returns to the handover process indicated by the handover command;

    Or, after the trigger condition of the conditional handover is satisfied or after the terminal initiates access to the first target cell meeting the trigger condition of the conditional handover or before the terminal successfully accesses the first target cell meeting the trigger condition of the conditional handover After receiving the handover command sent by the source cell, the terminal continues to perform the conditional handover.
22. The terminal according to any one of claims 19-21, wherein the switching module is further configured to:

    Back to the switching process indicated by the switching command;

    or,

    After the preset length of time, fall back to the switching process indicated by the switching command.
23. The terminal according to any one of claims 19-21, wherein the switching module is further configured to:

    Initiate access to the second target cell corresponding to the handover command.
24. The terminal according to any one of claims 19-21, wherein the switching module is further configured to:

    Terminating the condition switching process;

    or,

    Not initiate access to the first target cell that meets the trigger condition of the conditional handover;

    or,

    Terminate the ongoing access to the first target cell that meets the triggering condition of the handover.
25. The terminal according to claim 24, wherein the switching module is further configured to:

    Stop the running first timer and/or second timer;

    Wherein, the first timer is a timer used to determine whether the condition switching fails;

    The second timer is a timer used to control condition switching configuration and de-configuration.
26. The terminal according to claim 25, wherein, during the operation of the second timer, the switching command for conditional switching is valid or the configuration information for conditional switching is valid; otherwise, the switching command for conditional switching becomes invalid or The configuration information for conditional switching is invalid.
27. The terminal according to claim 23, wherein the switching module is further configured to:

    Initiate access to the second target cell using the resource configured by the handover command of the conditional handover;

    or,

    Use the resource configured by the handover command sent by the source cell received in the conditional handover process to initiate access to the second target cell.
28. The terminal according to claim 23, further comprising:

    A counting module, configured to re-count the preamble transmission counter and/or the preamble power climb counter during the access process initiated by the terminal to the second target cell;

    Or, when the second target cell and the first target cell meeting the trigger condition of the conditional handover are the same, the preamble transmission counter and/or the preamble transmission counter and/or The preamble power climb counter continues to count;

    Or, when the second target cell is the same as the first target cell that meets the trigger condition of the conditional handover, and the terminal uses the resource configured by the handover command of the conditional handover to initiate access to the second target cell, During the access process initiated by the terminal to the second target cell, the preamble transmission counter and/or the preamble power climb counter continue to count.
29. The terminal according to claim 23, further comprising:

    The first processing module is used to stop the running first timer and/or second timer;

    Or, used to restart the first timer and/or the second timer;

    Or, when the terminal initiates access to the second target cell using the resource configured by the handover command of the conditional handover, continue to run the first timer and/or the second timer;

    Wherein, the first timer is a timer used to determine whether the condition switching fails;

    The second timer is a timer used to control condition switching configuration and de-configuration.
30. The terminal according to claim 29, wherein, during the operation of the second timer, the switching command for conditional switching is valid or the configuration information for conditional switching is valid; otherwise, the switching command for conditional switching becomes invalid or The configuration information for conditional switching is invalid.
31. The terminal according to claim 19 or 21, wherein the switching module is further configured to:

    Ignore the handover command, and continue to initiate access to the first target cell meeting the trigger condition of the conditional handover or continue the ongoing access initiated to the first target cell meeting the trigger condition of the conditional handover.
32. The terminal according to claim 19 or 21, wherein the switching module is further configured to:

    According to the handover command, continue to initiate access to the first target cell meeting the trigger condition of the conditional handover or continue the ongoing access initiated to the first target cell meeting the trigger condition of the conditional handover.
33. The terminal according to claim 32, wherein the switching module is further configured to:

    In a case where the second target cell corresponding to the handover command is the same as the first target cell meeting the trigger condition of the conditional handover, the resource configured by the handover command is used to initiate access to the first target cell.
34. The terminal according to claim 19 or 21, further comprising:

    The second processing module is configured to continue to count the preamble transmission counter and/or the preamble power climb counter during the access process initiated by the terminal to the first target cell;

    Alternatively, it is used to recount the preamble transmission counter and/or the preamble power climb counter during the access process initiated by the terminal to the first target cell.
35. The terminal according to claim 19 or 21, further comprising:

    The third processing module is used to stop the running first timer and/or second timer;

    Or, used to restart the first timer and/or the second timer;

    Or, when the terminal initiates access to the first target cell using the resource configured by the handover command for conditional handover, continue to run the first timer and/or the second timer;

    Wherein, the first timer is a timer used to determine whether the condition switching fails;

    The second timer is a timer used to control condition switching configuration and de-configuration.
36. The terminal according to claim 35, wherein, during the operation of the second timer, the switching command for conditional switching is valid or the configuration information for conditional switching is valid; otherwise, the switching command for conditional switching becomes invalid or The configuration information for conditional switching is invalid.
37. A terminal, comprising a processor, a memory, and a computer program stored on the memory and capable of running on the processor. The computer program is executed by the processor to implement any one of claims 1 to 18 The steps of the switching method described in the item.
38. A computer-readable storage medium storing a computer program on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the switching method according to any one of claims 1 to 18 are realized.

Images